CA1072505A - Multi-compartment food package - Google Patents
Multi-compartment food packageInfo
- Publication number
- CA1072505A CA1072505A CA294,568A CA294568A CA1072505A CA 1072505 A CA1072505 A CA 1072505A CA 294568 A CA294568 A CA 294568A CA 1072505 A CA1072505 A CA 1072505A
- Authority
- CA
- Canada
- Prior art keywords
- package
- temporary
- separable
- ice
- seal
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
- B65D81/00—Containers, packaging elements, or packages, for contents presenting particular transport or storage problems, or adapted to be used for non-packaging purposes after removal of contents
- B65D81/32—Containers, packaging elements, or packages, for contents presenting particular transport or storage problems, or adapted to be used for non-packaging purposes after removal of contents for packaging two or more different materials which must be maintained separate prior to use in admixture
- B65D81/3261—Flexible containers having several compartments
- B65D81/3266—Flexible containers having several compartments separated by a common rupturable seal, a clip or other removable fastening device
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Packages (AREA)
- Packging For Living Organisms, Food Or Medicinal Products That Are Sensitive To Environmental Conditiond (AREA)
- Bag Frames (AREA)
Abstract
TITLE OF INVENTION
MULTI-COMPARTMENT FOOD PACKAGE
Abstract of the Disclosure A multi-compartment package for the packaging of food products takes the form of a generally flat rectangular pouch-like package which is permanently closed at the side edges, has a temporary seal at the top edge and a bottom closure. A further temporary seal extends between the top and bottom of the package separating the interior of the package into two separate compartments. The package is opened by separation along the temporary seals to result in a one compartment package open at the top. The invention has particular applicability to the packaging of the components of an ice-cream sandwich.
MULTI-COMPARTMENT FOOD PACKAGE
Abstract of the Disclosure A multi-compartment package for the packaging of food products takes the form of a generally flat rectangular pouch-like package which is permanently closed at the side edges, has a temporary seal at the top edge and a bottom closure. A further temporary seal extends between the top and bottom of the package separating the interior of the package into two separate compartments. The package is opened by separation along the temporary seals to result in a one compartment package open at the top. The invention has particular applicability to the packaging of the components of an ice-cream sandwich.
Description
~7;~:5()5 The present invention rela-tes to a package.
The packaging of food for storage, transportation and/or sale often requires hermetic sealing of the packaging structure to prevent spoilage of the food between the time of manufacture and the time of use. Packages of many shapes and types have been used including flexible, generally planar packages intended to package food items which lie generally flat. Such packages have been made of polymeric material which is heat sealed at its edges to achieve and maintain the hermetic sealing. Access to the contents of the package requires tearing of the package.
In some instances, it is convenient to package two or more materials which are associated in use in the same packageO However, certain combinations of products are capable of adversely interacting when packed togethex. In this connection, it has been previously suggested to form two or more separate compartments within the same package containing such materials by using suitable permanent heat seals~
.- I
The present invention is directed to a novel generally planar package for dissimilar materials. The present invention is particularlv directed to a package for holding the items forming an ice-cream sandwich and will be described with particular reference thereto. An ice-cream sandwich consists of a rectangular block of hard ice-cream positioned between two edible rectangular crisp frangible wafers of substantially the same dimension as the faces of the ice-cream block and which abut those faces.
The packaging of food for storage, transportation and/or sale often requires hermetic sealing of the packaging structure to prevent spoilage of the food between the time of manufacture and the time of use. Packages of many shapes and types have been used including flexible, generally planar packages intended to package food items which lie generally flat. Such packages have been made of polymeric material which is heat sealed at its edges to achieve and maintain the hermetic sealing. Access to the contents of the package requires tearing of the package.
In some instances, it is convenient to package two or more materials which are associated in use in the same packageO However, certain combinations of products are capable of adversely interacting when packed togethex. In this connection, it has been previously suggested to form two or more separate compartments within the same package containing such materials by using suitable permanent heat seals~
.- I
The present invention is directed to a novel generally planar package for dissimilar materials. The present invention is particularlv directed to a package for holding the items forming an ice-cream sandwich and will be described with particular reference thereto. An ice-cream sandwich consists of a rectangular block of hard ice-cream positioned between two edible rectangular crisp frangible wafers of substantially the same dimension as the faces of the ice-cream block and which abut those faces.
- 2 -~r\
" ~7Z5~5 In accordance with the present invention, there is provided a generally planar pouch-like package formed of overlying layers of heat-sealable flexible substantially air-and moisture-impervious material and having a generally rectangular shape with side edges and top and bottom edges, the package comprising enclosed side edges, a first temporary separable heat seal closing the top edge of the package, a heat seal closing the bottom edge of the package, and at least one additional temporary separable heat seal extending continuously from the top edge and across the package to the bottom edge and separating the interior of the package into separate compartments containing packaged items~ the temporary separ~ble seals being so cons~lcted that separation of the overlying layers may be effected therealong without other-wise damaging the integrity of the remainder of the package - and the layers to permit opening of the package at the top edge to gain simultaneous access to the items packaged in the separate compartments and to permit formation of a single interior compartment by separation of the overlying layers along the at least one temporary separable seal.
The term "permanent heat seal" as used herein refers to a single seal line or plurality of closely-spaced seal lines along which the joined materials are permanently fusingly joined and the joined materials cannot be separated one from another along the seal line.
The term "temporary heat seal" as used herein refers to a single seal line or a pluralit~ of closely spaced seal lines along which the joined materials are fusingly joined in such a way that the joined materials may be separated from one another along the seal line without destruction to the integrity of the material.
i - 3 107250~
- When the package of the present invention is used to package the components of an ice-cream sandwich, the compartments are elongate, the ice~cream block is held in one compartment while the two wafers are held in the other.
In this way, the ice-cream block and wafers are hermetically sealed from one another and moisture from the ice-cream block cannot adversely affect the crispness of the wafers, as would be the case if the components were packaged within the same enclosure.
.
.. .
;~
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~-'31~ - 3a -~' '' , .
~725~5 The provision of the temporary seals effectively provides a hermetic sealing of the packaged material from the external atmosphere until such time as the package is desired to be opened. The package is opened by drawing apart the material of the package along the temporary seal lines, per-mitting ready access to the contents of the package without otherwise affec~ing the integrity of the package.
The invention is described further by way of illustration with reference ~o the aco~nying drawings in which:
Figure 1 is a perspective view, with parts cut away for clarity, of a package provided in accordance with one embodi-ment of the invention and housing the components of an ice-cream sandwich;
Figure 2 is a perspective view of the package of Figure 1 during the act of opening of the package;
! Figure 3 is a perspective view of the package of Figure 1 in the fully opened structure; and Figure 4 is a perspective view of the opened package in use as a holder for an ice-cream sandwich.
Referring to the drawings, which illustrate the presently preferred embodiment of the invention and the best mode known to the applicant, a package 10, in the form of a generally flat rectangular pouch-like product, is formed of i~ overlying layers 12 and 14 of thin flexible heat-sealable substantially moisture-and air-impervious material, preferably plastic coated paper, which may be transparent, translucent or opaque, as desired.
Along each side edge of the package, the layers 12 and 14 are joined by a permanent heat seal 16 which constitu-tes a permanent closure of the package 10 along each side edge.
i ~
~725~5 The package lO may be opened along these edges only by tèaring one or more of the layers 12 and 14 in this region.
Along the bottom edge of the package lO, the layers 12 and 14 are joined by a further permanent seal 18, constituting a permanent closure of the package lO along that edge. If desired, depending on the intended use of the structure, the seal 18 formed at the bottom edge of the package may be of the temporary type described below with respect to the top edge of the package lO.
A temporary seal 20 is provided along the top edge - of the package lO resulting in complete closure of the package lO. The temporary seal 20 is constructed in such a way that the layers 12 and 14 may be separated along the seal line without otherwise damaging the integrity of the package lO and the individual sheets 12 and 14.
A further temporary seal line 22 ex-tends between the bottom edge seal 18 and the top edge seal 20 at the location between the side edge seals 16, separating the ; interior of the package into two individual elongate com-partments 24 and 26 which are hermetically sealed from each other in the closed package. In compartment 24 is located an ice-cream block 28 while in the compartment 26 is housed two crisp frangible edible wafers 30 in face-abutting relationship. The layers 12 and 14 usually tightly engage the material packaged in the respective compartments 24 and 26 to decrease spoilage due to air entrapped in the compartments 24 and 26.
The embodiment of the invention wherein the bottom ; seal 18 is also a temporary seal, as mentioned above, may be particularly beneficial in that the package lO is openable at either end for custo~ler convenience and may ~07Z505 be simpler to manufacture on automa-tic equipment.
The package 10 may be opened, as illustrated in Figures 2 and 3 by drawing apart the layers 12 and 14 in the region of the top seal 20 which separates the layers 12 and along that seal a~d also along the compartment-dividing seal 22 to result in an opened single compartment package 10 (Figure 3) sealed on three sides.
Once the package 10 is opened in this way, ready access may be had to the contents of the package 10. An ice-cream sandwich 32 may be assembled from the ice-cream block 28 and the wafers 30, and the opened package may be used as a holder for the sandwich 32, as shown in Figure 4.
The use of the opened package in this way catches drips - and prevents hand contact with the sandwich.
It will be seen that, although when the package 10 ' is sealed closed, the ice-cream block 28 and the wafers 30 are tightly held within the individual compartments, once the package 10 is opened and seals 20 and 22 are broken, the single compartment package which results permits ready removal of both the ice-cream block 28 and the wa~ers 30.
In place of superimposed layers 12 and 14 of heat sealable material heat sealed on four sides, the package 10 may be formed by folding a single sheet of heat sealable material on ikself and heat sealing the remaining edges.
Since the ice-cream block 28 and the wafers 30 are hermetically sealed from the influence of the ex-ternal atmosphere, a hygienic package wherein degradation as a result of outside influences is avoided is provided. Further, the wafers 30 are maintained in a crisp condition within the package 10 since they are separated from the influence of moisture from the ice-cream block 28.
;
7Z5~5 The package 10 may ~e transported and stored in a convenient refrigeration unit u~til sold to maintain the ice-cream block 28 in its frozen conditionO The package 10 may be stored in the flat condition shown in Figure 1, or, perhaps more conveniently when multiple numbers of packages are to be stored in a confined space, in a folded condition in which the package 10 is folded about seal line 22 so that compartment 24 sits in abutment with compartment 26.
Storage in this manner also may assist in preventing accidental damage to the wafers 18 as a result of the added rigidity achieved by juxtaposition to the relatively rigid block 16.
The external surfaces of the sheets 12 and 14 may be provided with brand identification material, opening instructions and other information, as desired.
The package of the invention has been described with reference to the preferred embodiment as comprising two compartments within the package. The invention is not limited thereto, and may be used in connection with any desired num~er of compartments within the package.
Further7 while the invention has been described in connection with the packaging of food products, the invention also may be used for packaging any desired materials in separate compartments.
!
The present invention, thereEore, relates to a ; package having a unique structure and wide utili-ty.
Modifications are possible within the scope of the invention.
" ~7Z5~5 In accordance with the present invention, there is provided a generally planar pouch-like package formed of overlying layers of heat-sealable flexible substantially air-and moisture-impervious material and having a generally rectangular shape with side edges and top and bottom edges, the package comprising enclosed side edges, a first temporary separable heat seal closing the top edge of the package, a heat seal closing the bottom edge of the package, and at least one additional temporary separable heat seal extending continuously from the top edge and across the package to the bottom edge and separating the interior of the package into separate compartments containing packaged items~ the temporary separ~ble seals being so cons~lcted that separation of the overlying layers may be effected therealong without other-wise damaging the integrity of the remainder of the package - and the layers to permit opening of the package at the top edge to gain simultaneous access to the items packaged in the separate compartments and to permit formation of a single interior compartment by separation of the overlying layers along the at least one temporary separable seal.
The term "permanent heat seal" as used herein refers to a single seal line or plurality of closely-spaced seal lines along which the joined materials are permanently fusingly joined and the joined materials cannot be separated one from another along the seal line.
The term "temporary heat seal" as used herein refers to a single seal line or a pluralit~ of closely spaced seal lines along which the joined materials are fusingly joined in such a way that the joined materials may be separated from one another along the seal line without destruction to the integrity of the material.
i - 3 107250~
- When the package of the present invention is used to package the components of an ice-cream sandwich, the compartments are elongate, the ice~cream block is held in one compartment while the two wafers are held in the other.
In this way, the ice-cream block and wafers are hermetically sealed from one another and moisture from the ice-cream block cannot adversely affect the crispness of the wafers, as would be the case if the components were packaged within the same enclosure.
.
.. .
;~
.~ .
~-'31~ - 3a -~' '' , .
~725~5 The provision of the temporary seals effectively provides a hermetic sealing of the packaged material from the external atmosphere until such time as the package is desired to be opened. The package is opened by drawing apart the material of the package along the temporary seal lines, per-mitting ready access to the contents of the package without otherwise affec~ing the integrity of the package.
The invention is described further by way of illustration with reference ~o the aco~nying drawings in which:
Figure 1 is a perspective view, with parts cut away for clarity, of a package provided in accordance with one embodi-ment of the invention and housing the components of an ice-cream sandwich;
Figure 2 is a perspective view of the package of Figure 1 during the act of opening of the package;
! Figure 3 is a perspective view of the package of Figure 1 in the fully opened structure; and Figure 4 is a perspective view of the opened package in use as a holder for an ice-cream sandwich.
Referring to the drawings, which illustrate the presently preferred embodiment of the invention and the best mode known to the applicant, a package 10, in the form of a generally flat rectangular pouch-like product, is formed of i~ overlying layers 12 and 14 of thin flexible heat-sealable substantially moisture-and air-impervious material, preferably plastic coated paper, which may be transparent, translucent or opaque, as desired.
Along each side edge of the package, the layers 12 and 14 are joined by a permanent heat seal 16 which constitu-tes a permanent closure of the package 10 along each side edge.
i ~
~725~5 The package lO may be opened along these edges only by tèaring one or more of the layers 12 and 14 in this region.
Along the bottom edge of the package lO, the layers 12 and 14 are joined by a further permanent seal 18, constituting a permanent closure of the package lO along that edge. If desired, depending on the intended use of the structure, the seal 18 formed at the bottom edge of the package may be of the temporary type described below with respect to the top edge of the package lO.
A temporary seal 20 is provided along the top edge - of the package lO resulting in complete closure of the package lO. The temporary seal 20 is constructed in such a way that the layers 12 and 14 may be separated along the seal line without otherwise damaging the integrity of the package lO and the individual sheets 12 and 14.
A further temporary seal line 22 ex-tends between the bottom edge seal 18 and the top edge seal 20 at the location between the side edge seals 16, separating the ; interior of the package into two individual elongate com-partments 24 and 26 which are hermetically sealed from each other in the closed package. In compartment 24 is located an ice-cream block 28 while in the compartment 26 is housed two crisp frangible edible wafers 30 in face-abutting relationship. The layers 12 and 14 usually tightly engage the material packaged in the respective compartments 24 and 26 to decrease spoilage due to air entrapped in the compartments 24 and 26.
The embodiment of the invention wherein the bottom ; seal 18 is also a temporary seal, as mentioned above, may be particularly beneficial in that the package lO is openable at either end for custo~ler convenience and may ~07Z505 be simpler to manufacture on automa-tic equipment.
The package 10 may be opened, as illustrated in Figures 2 and 3 by drawing apart the layers 12 and 14 in the region of the top seal 20 which separates the layers 12 and along that seal a~d also along the compartment-dividing seal 22 to result in an opened single compartment package 10 (Figure 3) sealed on three sides.
Once the package 10 is opened in this way, ready access may be had to the contents of the package 10. An ice-cream sandwich 32 may be assembled from the ice-cream block 28 and the wafers 30, and the opened package may be used as a holder for the sandwich 32, as shown in Figure 4.
The use of the opened package in this way catches drips - and prevents hand contact with the sandwich.
It will be seen that, although when the package 10 ' is sealed closed, the ice-cream block 28 and the wafers 30 are tightly held within the individual compartments, once the package 10 is opened and seals 20 and 22 are broken, the single compartment package which results permits ready removal of both the ice-cream block 28 and the wa~ers 30.
In place of superimposed layers 12 and 14 of heat sealable material heat sealed on four sides, the package 10 may be formed by folding a single sheet of heat sealable material on ikself and heat sealing the remaining edges.
Since the ice-cream block 28 and the wafers 30 are hermetically sealed from the influence of the ex-ternal atmosphere, a hygienic package wherein degradation as a result of outside influences is avoided is provided. Further, the wafers 30 are maintained in a crisp condition within the package 10 since they are separated from the influence of moisture from the ice-cream block 28.
;
7Z5~5 The package 10 may ~e transported and stored in a convenient refrigeration unit u~til sold to maintain the ice-cream block 28 in its frozen conditionO The package 10 may be stored in the flat condition shown in Figure 1, or, perhaps more conveniently when multiple numbers of packages are to be stored in a confined space, in a folded condition in which the package 10 is folded about seal line 22 so that compartment 24 sits in abutment with compartment 26.
Storage in this manner also may assist in preventing accidental damage to the wafers 18 as a result of the added rigidity achieved by juxtaposition to the relatively rigid block 16.
The external surfaces of the sheets 12 and 14 may be provided with brand identification material, opening instructions and other information, as desired.
The package of the invention has been described with reference to the preferred embodiment as comprising two compartments within the package. The invention is not limited thereto, and may be used in connection with any desired num~er of compartments within the package.
Further7 while the invention has been described in connection with the packaging of food products, the invention also may be used for packaging any desired materials in separate compartments.
!
The present invention, thereEore, relates to a ; package having a unique structure and wide utili-ty.
Modifications are possible within the scope of the invention.
Claims (7)
1. A generally planar pouch-like package formed of overlying layers of heat-sealable flexible substantially air-and moisture-impervious material and having a generally rectangular shape with side edges and top and bottom edges, said package comprising enclosed side edges, a first temporary separable heat seal closing the top edge of the package, a heat seal closing the bottom edge of the package, and at least one additional temporary separable heat seal extending continuously from said top edge and across the package to said bottom edge and separating the interior of the package into separate compartments containing packaged items, said temporary separable seals being so constructed that separation of the overlying layers may be effected therealong without otherwise damaging the integrity of the remainder of the package and the layers to permit opening of the package at said top edge to gain simultaneous access to the items packaged in said separate compartments and to permit formation of a single interior compartment by separation of the overlying layers along said at least one temporary separable seal.
2. The package of claim 1 wherein one additional temporary separable seal only is provided and extends between the top and bottom edge heat seals parallel to permanent heat seals formed at each side edge, along which said overlying layers are not separable.
3. The package of claim 2 wherein one compartment contains a rectangular block of ice-cream and the other compartment contains two frangible edible wafers in face abutting relationship, said compartments being dimensioned to minimize the air space in each compartment and to position the ice-cream block and wafers with their longitudinal axes substantially parallel to said side edges, whereby, upon opening of the package by separation of the layers along said temporary seals, a single compart-ment open-topped package results from which said ice-cream block and wafers may be readily removed and which may be reused as a wrapper for said ice-cream sandwich.
4. The package of claim 1, 2 or 3, wherein said bottom edge has a permanent heat seal.
5. The package of claim 1, 2 or 3, wherein said bottom edge has a temporary heat seal, whereby said package may be opened at either end.
6. The package of claim 1, 2 or 3, wherein each of said compartments contains the components of a food product and at least one of said components is adversely affected by at least one other component upon long storage, whereby location of said components in separate compartments of the package hermetically sealed from one another inhibits said adverse effect.
7. The package of claim 1, 2 or 3, wherein said overlying layers are directly joined in separable manner in each said temporary separable seal.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB24659/77A GB1592606A (en) | 1977-06-13 | 1977-06-13 | Ice cream package |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA1072505A true CA1072505A (en) | 1980-02-26 |
Family
ID=10215212
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA294,568A Expired CA1072505A (en) | 1977-06-13 | 1978-01-09 | Multi-compartment food package |
Country Status (7)
| Country | Link |
|---|---|
| US (1) | US4145449A (en) |
| JP (1) | JPS546692A (en) |
| AU (1) | AU529472B2 (en) |
| CA (1) | CA1072505A (en) |
| DE (1) | DE2825846C3 (en) |
| GB (1) | GB1592606A (en) |
| NZ (1) | NZ187533A (en) |
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|---|---|---|---|---|
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| JPS578477Y2 (en) * | 1978-02-21 | 1982-02-18 | ||
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| US9238537B2 (en) | 2013-06-10 | 2016-01-19 | Frito-Lay North America, Inc. | Method for producing multi-compartment packages |
| CN107531337A (en) * | 2014-09-18 | 2018-01-02 | 酷伊零食澳大利亚有限公司 | System and method for packing the food with different water activity values |
| USD784159S1 (en) | 2015-06-15 | 2017-04-18 | MaBelle Bray | Multi-compartment resealable storage bag |
| USD801829S1 (en) | 2016-04-12 | 2017-11-07 | MaBelle Bray | Multi-compartment resealable storage bag |
| USD843112S1 (en) * | 2016-12-16 | 2019-03-19 | Pouch Pac Innovations, Llc | Multi-compartment pouch |
| IL264737B (en) | 2019-02-06 | 2020-12-30 | Aref Basheer | Multi-compartment package for mixing food ingredients and method of using the same |
| USD1003039S1 (en) | 2019-11-01 | 2023-10-31 | Bray Mabelle | Multi-compartment storage bag with rounded corners |
| USD959281S1 (en) * | 2021-09-17 | 2022-08-02 | Shenzhen Haixing Technology Co., Ltd. | Resealable storage bag |
| US20240262599A1 (en) * | 2023-02-06 | 2024-08-08 | William Cho | Nested heat-sealable bags for food storage |
Family Cites Families (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2401110A (en) * | 1943-09-20 | 1946-05-28 | Howard A Rohdin | Bag and method of making same |
| US2527919A (en) * | 1948-04-20 | 1950-10-31 | Drangle Leon | Cheese and cracker package |
| GB697723A (en) * | 1949-07-25 | 1953-09-30 | John Tye & Son Ltd | Improvements in and relating to capsules |
| US2741559A (en) * | 1951-08-11 | 1956-04-10 | Tv Time Foods Inc | Packaged article of food and method of making the same |
| US2793955A (en) * | 1955-01-10 | 1957-05-28 | Selmer Ben | Refrigerator cookie package |
| US2932385A (en) * | 1956-03-05 | 1960-04-12 | Minnesota Mining & Mfg | Multicompartment package with internal breaker strip |
| DE1838677U (en) * | 1961-01-23 | 1961-09-28 | Georg Felsl | LOCKABLE DOUBLE BAG. |
| US3441418A (en) * | 1964-08-01 | 1969-04-29 | Yozo Nishikiori | Production of instant-type cream puffs |
| US3469768A (en) * | 1964-08-27 | 1969-09-30 | Dow Chemical Co | Dual compartment container |
| US3294227A (en) * | 1965-03-05 | 1966-12-27 | Wayne Rodgers V | Multiple compartment package |
| US3511436A (en) * | 1966-09-12 | 1970-05-12 | Us Plywood Champ Papers Inc | Easy opening heat sealed package |
| DE1753190A1 (en) * | 1968-01-08 | 1971-07-15 | Rommelsbacher Gustav Dipl Ing | Foldable cooking plate |
| DE1985267U (en) * | 1968-02-13 | 1968-05-09 | Scheuch K G | BAGS FOR PACKAGING FOOD AND THE LIKE |
-
1977
- 1977-06-13 GB GB24659/77A patent/GB1592606A/en not_active Expired
-
1978
- 1978-01-09 CA CA294,568A patent/CA1072505A/en not_active Expired
- 1978-01-12 US US05/868,816 patent/US4145449A/en not_active Expired - Lifetime
- 1978-06-12 NZ NZ187533A patent/NZ187533A/en unknown
- 1978-06-13 DE DE2825846A patent/DE2825846C3/en not_active Expired
- 1978-06-13 JP JP7043078A patent/JPS546692A/en active Pending
- 1978-06-15 AU AU37135/78A patent/AU529472B2/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| DE2825846B2 (en) | 1981-03-26 |
| DE2825846C3 (en) | 1981-11-05 |
| JPS546692A (en) | 1979-01-18 |
| GB1592606A (en) | 1981-07-08 |
| AU3713578A (en) | 1979-12-20 |
| AU529472B2 (en) | 1983-06-09 |
| US4145449A (en) | 1979-03-20 |
| DE2825846A1 (en) | 1978-12-14 |
| NZ187533A (en) | 1980-05-08 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| MKEX | Expiry |